Improvement in dies for making perch-irons



JOSEPH W. SHEPPARD.

Improvement in Dies for making Perch Bars.

No. 123,943. Patented Feb;20,1872.

Wdngmrem v v flit/67077157.

UNITED STATES PATENT OFFIcn.

JOSEPH SHEPPARD, OF PLANTSVILLE, CONNECTICUT.

IMPROVEMENT IN DIES FOR MAKING PERCH-IRONS.

Specification forming part of Letters Patent No. 123,943, dated February20, 1872.

To all whom it may concern:

Be it known that I, JOSEPH W. SHEPPARD, of Plantsville, in the county ofHartford and in the State of Connecticut, have invented certain new anduseful Improvements in the Manufacture of Perch-Irons; and doherebydeclare that the following is a full, clear, and exact descriptionthereof, reference being had to the accompanying drawing making a partof this specification, in which Figures 1 and 2 are plan views of theupper side of the bottom die as arranged for forming a part or the wholeof the device. Figs. 3 and 4 are perspective views of detachableportions used for converting said die into the forms shown. Fig. 5 is aplan view of the perchiron formed in said dies. Fig. 6 is an edge viewof the same and Figs. 7 and 8 are perspective views, respectively, ofthe partial and complete dies, with the perch-irons in place.

Letters of like name and kind refer to like parts in each of thefigures.

The-object of my invention is to construct the rear or brace end ofperch-irons in a cheaper manner and with greater uniformity than hasheretofore been practicable; and it consists in the peculiarconstruction of the dies employed, substantially as and for the purposehereinafter specified.

In the annexed drawing, A represents a metal block, having any desiredexterior shape, upon or within the upperplane surface of which is cut aright-angled groove, B, that, extending horizontally inward for a shortdistance from one edge of said block, intersects a smaller half-roundgroove, 1), which from thence extends in a curve outward and forward,and at each of its ends connects with a short rightangled groove, B,placed in a line parallel with that of the first-named groove B, thelower side of the impression thus formed being upon a uniform plane. Thedie thus formed, in connection with a plane; faced die, is intended foruse under or within a drop-press, trip-hammer, or any suitablemechanism, by means of which the contiguous faces of said dies maybecaused to impinge upon each other. In constructing theperch-iron C, apiece of suitable iron, having a Width slightly less than the width ofthe groove B, and a thickness somewhat greater than the depthof saidgroove, is split through its center to a sufficient distance to form theprongs or arms C of said perchiron, and said split portion bent outwardso as to give to it the general shape desired, after which the metal isreheated, placed upon the die, and, by the impact of a suitableplanefaced die, caused to fill the impression. By reversing theperch-iron within the die, and subjecting it to one or more additionalblows of the upper die, the rounded portions 0 of the prongs will becompleted, after which the surplus metal, which has been forced outwardin the form of a thin fin, may be trimmed off in the usual manner. Ifdesired, the rounded portions 0 of the perch-iron may be finished undera suitable hammer, and only the rectangular portions of the devicecompleted by or within the die, in which event the latter would beconstructed in the form shown in Fig. 1. In order that the die may becapable of use in either of the ways named, the portion A containing therounded grooves may be made detachable, and a corresponding block, A,shown in Fig. 3, inserted in its place. If desired, the die may bedivided longitudinally and one-half only used, in which event butone-half of the perch-iron can be operated upon at the same time.

The especial advantages obtained by the use of thehereinbefore-described dies is, that the articles produced have perfectuniformity in size and shape, and cost less than would be possible wereother means employed.

Having thus fully set forth the nature and merits of my invention, whatI claim as new 1s- The die A, constructed substantially as and for thepurpose specified.

In testimony that I claim the foregoing I have hereunto set my hand this20th day of January, 1872.

. JOSEPH W. SHEPPARD. Witnesses:

SIMEON H. NORTON, JNO. D. QUILL.

